The Triassic Period was a time of great change ... when the archosaurian reptiles, which includes the dinosaurs, came to dominate.' The cause of the Permian-Triassic extinction event is not fully ...

Dinosaurs evolved from more primitive reptiles in the aftermath of Earth’s biggest mass-extinction event caused by extreme volcanism at the end of the Permian Period about 252 million years ago.

This also marked the first time the earliest dinosaurs appeared. The Permian period’s mass extinction had wiped out the mammals that could have been competitors for these reptiles on land and in ...

The most famous die-off ended the reign of the dinosaurs 65 million years ... the terrestrial realm's transition from the Permian to the Triassic period." We ascended through sheep-ranching ...

A new study reveals that Earth's biomes changed dramatically in the wake of mass volcanic eruptions 252 million years ago.

The two biggest extinctions were at the end of the Permian Period, about 250 million years ... suggests that many organisms, including dinosaurs, were declining in numbers well before the K ...

This not only marked the end of the Permian period and the start of the Triassic ... Alongside these terrestrial vertebrates, the first dinosaurs began to appear. They were mostly much smaller ...

Stanford scientists found that dramatic climate changes after the Great Dying enabled a few marine species to spread globally ...

Learn about the time period that took place 251 to 199 million ... including rodent-size mammals and the first dinosaurs. By the start of the Triassic, all the Earth's landmasses had coalesced ...